<template>
	<div>
		<h2>当前求和为：{{$store.state.sum}}</h2>
		<select v-model.number="n">
			<option value="1">1</option>
			<option value="2">2</option>
			<option value="3">3</option>
		</select>
		<button @click="increment">+</button>
		<button @click="decrement">-</button>
		<button @click="incrementIfOdd">当前求和为奇数再+</button>
		<button @click="incrementWait">等一等再+</button>
	</div>
</template>

<script>
	export default {
		name:'Count',
		data() {
			return {
				n:1
			}
		},
		methods: {
			//加
			increment(){
				//以后得编写一段代码，告诉vuex去+n
				this.$store.dispatch('jia',this.n)
			},
			//减
			decrement(){
				//以后得编写一段代码，告诉vuex去-n
				this.$store.dispatch('jian',this.n)
			},
			//奇数加
			incrementIfOdd(){
				if(this.$store.state.sum % 2){
					this.$store.dispatch('jia',this.n)
				}
			},
			//等等再加
			incrementWait(){
				setTimeout(()=>{
					this.$store.dispatch('jia',this.n)
				},500)
			},
		},	
		mounted() {
			console.log(this)
		},
	}
</script>

<style>
	*{
		margin-left: 10px;
	}
</style>